Where do winter dates come from?
Winter jujube is mainly distributed in Miaoshang Township, Hebei, Shandong and other places in Shanxi, and can be planted in Shandong, Shanxi, Henan, Hebei, Anhui, Jiangsu, Tianjin, Beijing, Liaoning, Shaanxi, Gansu, Ningxia, Qinghai, Inner Mongolia, Xinjiang and other provinces, cities and autonomous regions.
Winter jujube is a kind of high-quality late-maturing fresh food in northern Shandong. Winter jujube belongs to Rhamnaceae, Zizyphus. It is an excellent late-maturing fresh-eating spinless jujube variety. Winter jujube generally ripens naturally in the solar calendar from 65438+ 10 to 165438+ 10. Because the weather in the north entered the cold earlier, it was named "Winter Jujube".
Fructose, glucose, oligosaccharides and acidic polysaccharides in winter jujube can also protect the liver. Traditional Chinese medicine believes that winter jujube is sweet and slightly warm, which is beneficial to the stomach, spleen, liver, heart and other viscera, and has the functions of calming the nerves, tonifying the spleen and benefiting the stomach, and easing the medicinal properties.
Extended data:
The biggest feature of winter jujube is its extremely high vitamin C content, which is as high as 380~600 mg per 100 g pulp, 70 times that of apple and 0/6 times that of citrus. Compared with dried jujube, fresh jujube avoids the loss of some nutrients during drying, and has high utilization rate, which has good medicinal and health care value. But fresh winter jujube should pay attention to the following problems:
1, Dongzao is rich in sugar, mainly glucose. If diabetics don't eat too much, their blood sugar will rise rapidly and their condition will get worse.
2. Rotten winter jujube will make microorganisms multiply, so that the fruit enzyme in jujube will continue to decompose pectin to produce pectin and methanol, which can be decomposed into formaldehyde and methanol. People who eat rotten dates will have poisoning reactions such as dizziness and impaired vision, which can be life-threatening in severe cases.
Eating too many fresh winter dates can easily lead to indigestion and diarrhea. Therefore, people with colds, fever, abdominal distension and qi stagnation caused by exogenous wind and heat, and those with chronic diarrhea should eat less.
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